cannabineer
Ursus marijanus
Nope; it's subtract 32 and multiply by 1.8 going from F to Cso it is basically double and add 20, not 30 to get a rough questimation.. bookmarked this page so i can come back and try and memorize yours later on when i'm not as stoned..
from C to F it's divide by 1.8 9or multiply by 5/9) and add 32. The order of addition and multiplication is oomportant.